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Titanium can be acid etched also if that's what Nancy was referring to, it comes out in nice rainbows & unicorn colors. Almost any metal can be treated with the right acids to achieve differing colors. One of our favorite jewelry makers use of the processes to make some very unique industrial/steampunk type stuff.

I thought acid-etching titanium, actually ... well, etched the metal and changed the texture. Whereas, heating the titanium resulted in an oxide layer with differing refractive indexes that resulted in color change.

The etching I've been doing is for textures using ferric chloride (get it at Radio Shack) - it's what they use to etch circuit boards. I don't know much about colorizing titanium, except that people are anodizing it with some combo of phosphoric acid (cola (cleans toilets too!)), batteries, wires. Googling should begat some good tutorials.

Have you figured out how the light is going to be activated and if it will have multiple modes? Rechargeable or primary battery?

I haven't figured out anything other than It might be cool to make an understated - low profile ring with a light in it. Hopefully I'll find the time and motivation to get it worked out. Ill let you guys know what I come up with. I really appreciate my kite community friends being supportive of my projects. Thanks.

Those particular type of LED's they rarely list voltage for. They are more than likely .3v or less and can handle up to 12v. THose are what you usually see in TVs or on comp boards as indicator led flashlights so they can handle a good voltage range.

Yes there are many of them out there. Little child's are creating beauty things with the help those available LEDS.

Titanium can be anodized using a variety of solvents combined with specific voltages applied across the piece...to give very specific colors. It is a fine art, but not difficult. There are many many youtube videos. The trick is how to get +24V across the ring? The best answer is linking 9V batteries, unless you have a variable output DC box. Many colors are accessible if you have the V range.

Your ring idea has been tried many many times in various forms. I am one of those Flashaholics on CPF, and I have a few lights. I have also made a few modifications, etc. So I am vaguely familiar with the basics of LED lights.

Your main issue is the battery. A battery claiming a 90mAh capacity is going to likely have significantly less than that, as all batteries are overrated. And even if, 90mA is a one shot show...then you need to change or charge the battery.

By the way, how are you doing that? Are you really going to change batteries in a ring?

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"When once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return." L daVinci

I don't understand the luminous intensity rating. Is 90 enough to do anything useful? I don't expect this thing to put out a lot of light, but hopefully enough to like read text on a page or something. Hopefully the battery(s) could last more than a joke amount of time?

I have no idea what I'm doing, just trying to learn. I know a lot of you guys are engineers and tinker types that probably know this stuff.

Thanks for your time. Sorry if I'm on crack for thinking this could work. All I know is that some people would sh*t themselves if they could have cool flashlight ring that provided enough light to be useful. As far as making the ring and cramming all the crap inside, no prob, I can do that. I want the light to shine parallel to your finger if you were pointing and not straight up.

Were you able to design the flashlight circuit? I need to get one for my lights but have less knowledge about circuits..Please share a simple process of designing circuit..

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